169641 has 16 divisors (see below), whose sum is σ = 257920. Its totient is φ = 110160.

The previous prime is 169639. The next prime is 169649. The reversal of 169641 is 146961.

169641 is a `hidden beast` number, since 16 + 9 + 641 = 666.

169641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 169641 - 2¹ = 169639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1596 + ... + 1698.

It is an arithmetic number, because the mean of its divisors is an integer number (16120).

2¹⁶⁹⁶⁴¹ is an apocalyptic number.

It is an amenable number.

169641 is a deficient number, since it is larger than the sum of its proper divisors (88279).

169641 is a wasteful number, since it uses less digits than its factorization.

169641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 167 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 169641 is about 411.8749810319. The cubic root of 169641 is about 55.3575602367.

The spelling of 169641 in words is "one hundred sixty-nine thousand, six hundred forty-one".